Organic light emitting device

Patent metadata

Field	Value
Publication number	US-2018261794-A1
Application number	US-201815976975-A
Country	US
Kind code	A1
Filing date	May 11, 2018
Priority date	Dec 29, 2016
Publication date	Sep 13, 2018
Grant date	—

Abstract

An organic light emitting diode includes: a first electrode including a concave part or a convex part; an organic light emitting layer disposed on the first electrode; and a second electrode disposed on the organic light emitting layer.

First claim

What is claimed is:

1 . An organic light emitting diode comprising:
an electrode pattern in including a body and a plurality of holes, the body connecting the plurality of holes; a first electrode on the electrode pattern, the first electrode including a plurality of protruding parts corresponding to the body and a plurality of flat parts corresponding to the plurality of holes; a light emitting layer on the first electrode; and a second electrode on the light emitting layer.

2 . The organic light emitting diode of claim 1 , wherein the electrode pattern and the first electrode are formed of a same material.

3 . The organic light emitting diode of claim 1 , wherein the body has a cross-section of a triangular shape and includes a bottom surface and first and second inclined side surfaces connected to the bottom surface.

4 . The organic light emitting diode of claim 1 , wherein a width of the body is smaller than a width of each of the plurality of holes.

5 . The organic light emitting diode of claim 1 , each of the plurality of holes has a cross-section of a trapezoidal shape.

6 . The organic light emitting diode of claim 1 , each of the plurality of holes has a plane of one of a hexagonal shape, a half circular shape, a half elliptical shape, a rectangular shape and a circular shape.

7 . The organic light emitting diode of claim 1 , an area of the plurality of holes is reduced from the first electrode to a lower portion thereof.

8 . The organic light emitting diode of claim 1 , the body and the plurality of holes are alternately disposed.

9 . The organic light emitting diode of claim 1 , the first electrode, the light emitting layer and the second electrode are disposed in a shape that follows a morphology of the electrode pattern.

10 . An organic light emitting device comprising:
a substrate including a light emitting region; an overcoat layer on the substrate; an electrode pattern in the light emitting region on the overcoat layer, the electrode pattern including a body and a plurality of holes exposing the overcoat layer; a first electrode on the overcoat layer and the electrode pattern, the first electrode including a plurality of protruding parts corresponding to the body and a plurality of flat parts corresponding to the plurality of holes; a bank layer on the overcoat layer and the first electrode, the bank layer including an opening exposing the first electrode; a light emitting layer on the first electrode and the overcoat layer; and a second electrode on the light emitting layer.

11 . The organic light emitting device of claim 10 , wherein the electrode pattern and the first electrode are formed of a same material.

12 . The organic light emitting device of claim 10 , wherein the body has a cross-section of a triangular shape.

13 . The organic light emitting device of claim 10 , wherein a width of the body is smaller than a width of each of the plurality of holes.

14 . The organic light emitting device of claim 10 , each of the plurality of holes has a cross-section of a trapezoidal shape.

15 . The organic light emitting device of claim 10 , each of the plurality of holes has a plane of one of a hexagonal shape, a half circular shape, a half elliptical shape, a rectangular shape and a circular shape.

16 . The organic light emitting device of claim 10 , an area of the plurality of holes is reduced from the first electrode to a lower portion thereof.

17 . The organic light emitting device of claim 10 , the body and the plurality of holes are alternately disposed.

18 . The organic light emitting device of claim 10 , the first electrode, the light emitting layer and the second electrode are disposed in a shape that follows a morphology of the electrode pattern.

19 . The organic light emitting device of claim 10 , the overcoat layer has a flat top surface, and the electrode pattern is disposed on the flat top surface of the overcoat layer.

Assignees

• Lg Display Co Ltd

Inventors

• Choi Yong-Hoon
• Koo Won-Hoe
• Kim Jin-Tae
• Kim Soo-Kang
• Jang Ji-Hyang

Classifications

• H10K2101/00

  Properties of the organic materials covered by group H10K85/00 · CPC title

• H10K59/122

  Pixel-defining structures or layers, e.g. banks · CPC title

• H10K50/85

  Arrangements for extracting light from the devices · CPC title

• H10K59/10

  OLED displays · CPC title

• H10K50/813 Primary

  characterised by their shape · CPC title